21127 Lecture Notes - Lecture 2: Quadratic Formula, Natural Number, Additive Identity
16 Dec 2015
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It includes a template . tex le for homework 1. O ce hours: mine are posted: mon and wed after class, 2:30-3:30, and tues 1-2. I"m also reachable by email to set up an appointment, and ampdf is good, too! Tas" o ce hours will be posted this week. I mentioned on monday that we have to agree on some fundamental truths that we just believe are true. Here are some fundamental facts we will assume are true, for the purposes of this course. First, we will assume some fundamental sets of numbers exist: n is the set of natural numbers: N = {1, 2, 3, 4, 5, . (note: it"s more natural to start with 1, instead of 0. : z is the set of integers: , 3, 2, 1, 0, 1, 2, 3, . (note: zahlen is german for numbers. : q is the set of rational numbers, or quotients of integers: (cid:110) a b.
